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<record><TEI><teiHeader><fileDesc><titleStmt><title xml:lang="en">Change in Uptake, Transport and Accumulation of Ions in <italic>Nerium oleander</italic> (Rosebay) as Affected by Different Nitrogen Sources and Salinity</title><author><name sortKey="Abdolzadeh, Ahmad" sort="Abdolzadeh, Ahmad" uniqKey="Abdolzadeh A" first="Ahmad" last="Abdolzadeh">Ahmad Abdolzadeh</name><affiliation><nlm:aff id="af1"><addr-line>Gorgan University of Agricultural Sciences and Natural Resources, POB 49175-386, Gorgan</addr-line>,<country>Iran</country></nlm:aff></affiliation><affiliation><nlm:aff id="af3"><addr-line>School of Plant Biology</addr-line>,<institution>The University of Western Australia</institution>,<addr-line>35 Stirling Highway, Crawley WA 6009</addr-line>,<country>Australia</country></nlm:aff></affiliation></author><author><name sortKey="Shima, Kazuto" sort="Shima, Kazuto" uniqKey="Shima K" first="Kazuto" last="Shima">Kazuto Shima</name><affiliation><nlm:aff id="af2"><addr-line>Laboratory of Applied Plant Ecology, Graduate School of Natural Sciences and Technology</addr-line>,<institution>Okayama University</institution>,<addr-line>Tsushima-naka, Okayama 700</addr-line>,<country>Japan</country></nlm:aff></affiliation></author><author><name sortKey="Lambers, Hans" sort="Lambers, Hans" uniqKey="Lambers H" first="Hans" last="Lambers">Hans Lambers</name><affiliation><nlm:aff id="af3"><addr-line>School of Plant Biology</addr-line>,<institution>The University of Western Australia</institution>,<addr-line>35 Stirling Highway, Crawley WA 6009</addr-line>,<country>Australia</country></nlm:aff></affiliation></author><author><name sortKey="Chiba, Kyozo" sort="Chiba, Kyozo" uniqKey="Chiba K" first="Kyozo" last="Chiba">Kyozo Chiba</name><affiliation><nlm:aff id="af2"><addr-line>Laboratory of Applied Plant Ecology, Graduate School of Natural Sciences and Technology</addr-line>,<institution>Okayama University</institution>,<addr-line>Tsushima-naka, Okayama 700</addr-line>,<country>Japan</country></nlm:aff></affiliation></author></titleStmt><publicationStmt><idno type="wicri:source">PMC</idno><idno type="pmid">18772147</idno><idno type="pmc">2712379</idno><idno type="url">http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2712379</idno><idno type="RBID">PMC:2712379</idno><idno type="doi">10.1093/aob/mcn156</idno><date when="2008">2008</date><idno type="wicri:Area/Pmc/Corpus">000302</idno><idno type="wicri:explorRef" wicri:stream="Pmc" wicri:step="Corpus" wicri:corpus="PMC">000302</idno></publicationStmt><sourceDesc><biblStruct><analytic><title xml:lang="en" level="a" type="main">Change in Uptake, Transport and Accumulation of Ions in <italic>Nerium oleander</italic> (Rosebay) as Affected by Different Nitrogen Sources and Salinity</title><author><name sortKey="Abdolzadeh, Ahmad" sort="Abdolzadeh, Ahmad" uniqKey="Abdolzadeh A" first="Ahmad" last="Abdolzadeh">Ahmad Abdolzadeh</name><affiliation><nlm:aff id="af1"><addr-line>Gorgan University of Agricultural Sciences and Natural Resources, POB 49175-386, Gorgan</addr-line>,<country>Iran</country></nlm:aff></affiliation><affiliation><nlm:aff id="af3"><addr-line>School of Plant Biology</addr-line>,<institution>The University of Western Australia</institution>,<addr-line>35 Stirling Highway, Crawley WA 6009</addr-line>,<country>Australia</country></nlm:aff></affiliation></author><author><name sortKey="Shima, Kazuto" sort="Shima, Kazuto" uniqKey="Shima K" first="Kazuto" last="Shima">Kazuto Shima</name><affiliation><nlm:aff id="af2"><addr-line>Laboratory of Applied Plant Ecology, Graduate School of Natural Sciences and Technology</addr-line>,<institution>Okayama University</institution>,<addr-line>Tsushima-naka, Okayama 700</addr-line>,<country>Japan</country></nlm:aff></affiliation></author><author><name sortKey="Lambers, Hans" sort="Lambers, Hans" uniqKey="Lambers H" first="Hans" last="Lambers">Hans Lambers</name><affiliation><nlm:aff id="af3"><addr-line>School of Plant Biology</addr-line>,<institution>The University of Western Australia</institution>,<addr-line>35 Stirling Highway, Crawley WA 6009</addr-line>,<country>Australia</country></nlm:aff></affiliation></author><author><name sortKey="Chiba, Kyozo" sort="Chiba, Kyozo" uniqKey="Chiba K" first="Kyozo" last="Chiba">Kyozo Chiba</name><affiliation><nlm:aff id="af2"><addr-line>Laboratory of Applied Plant Ecology, Graduate School of Natural Sciences and Technology</addr-line>,<institution>Okayama University</institution>,<addr-line>Tsushima-naka, Okayama 700</addr-line>,<country>Japan</country></nlm:aff></affiliation></author></analytic><series><title level="j">Annals of Botany</title><idno type="ISSN">0305-7364</idno><idno type="eISSN">1095-8290</idno><imprint><date when="2008">2008</date></imprint></series></biblStruct></sourceDesc></fileDesc><profileDesc><textClass></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en"><sec><title>Background and Aims</title><p>The source of nitrogen plays an important role in salt tolerance of plants. In this study, the effects of NaCl on net uptake, accumulation and transport of ions were investigated in <italic>Nerium oleander</italic> with ammonium or nitrate as the nitrogen source in order to analyse differences in uptake and cycling of ions within plants.</p></sec><sec><title>Methods</title><p>Plants were grown in a greenhouse in hydroponics under different salt treatments (control vs. 100 m<sc>m</sc> NaCl) with ammonium or nitrate as the nitrogen source, and changes in ion concentration in plants, xylem sap exuded from roots and stems, and phloem sap were determined.</p></sec><sec><title>Key Results</title><p>Plant weight, leaf area and photosynthetic rate showed a higher salt tolerance of nitrate-fed plants compared with that of ammonium-fed plants. The total amount of Na<sup>+</sup> transported in the xylem in roots, accumulated in the shoot and retranslocated in the phloem of ammonium-fed plants under salt treatment was 1·8, 1·9 and 2·7 times more, respectively, than that of nitrate-treated plants. However, the amount of Na<sup>+</sup> accumulated in roots in nitrate-fed plants was about 1·5 times higher than that in ammonium-fed plants. Similarly, Cl<sup>−</sup> transport via the xylem to the shoot and its retranslocation via the phloem (Cl<sup>−</sup> cycling) were far greater with ammonium treatment than with nitrate treatment under conditions of salinity. The uptake and accumulation of K<sup>+</sup> in shoots decreased more due to salinity in ammonium-fed plants compared with nitrate-fed plants. In contrast, K<sup>+</sup> cycling in shoots increased due to salinity, with higher rates in the ammonium-treated plants.</p></sec><sec><title>Conclusions</title><p>The faster growth of nitrate-fed plants under conditions of salinity was associated with a lower transport and accumulation of Na<sup>+</sup> and Cl<sup>−</sup> in the shoot, whereas in ammonium-fed plants accumulation and cycling of Na<sup>+</sup> and Cl<sup>−</sup> in shoots probably caused harmful effects and reduced growth of plants.</p></sec></div></front></TEI><pmc article-type="research-article"><pmc-comment>The publisher of this article does not allow downloading of the full text in XML form.</pmc-comment>
<front><journal-meta><journal-id journal-id-type="nlm-ta">Ann Bot</journal-id><journal-id journal-id-type="publisher-id">annbot</journal-id><journal-id journal-id-type="hwp">annbot</journal-id><journal-title-group><journal-title>Annals of Botany</journal-title></journal-title-group><issn pub-type="ppub">0305-7364</issn><issn pub-type="epub">1095-8290</issn><publisher><publisher-name>Oxford University Press</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="pmid">18772147</article-id><article-id pub-id-type="pmc">2712379</article-id><article-id pub-id-type="doi">10.1093/aob/mcn156</article-id><article-id pub-id-type="publisher-id">mcn156</article-id><article-categories><subj-group subj-group-type="heading"><subject>Original Articles</subject></subj-group></article-categories><title-group><article-title>Change in Uptake, Transport and Accumulation of Ions in <italic>Nerium oleander</italic> (Rosebay) as Affected by Different Nitrogen Sources and Salinity</article-title></title-group><contrib-group><contrib contrib-type="author"><name><surname>Abdolzadeh</surname><given-names>Ahmad</given-names></name><xref ref-type="aff" rid="af1">1</xref><xref ref-type="aff" rid="af3">3</xref><xref ref-type="corresp" rid="cor1">*</xref></contrib><contrib contrib-type="author"><name><surname>Shima</surname><given-names>Kazuto</given-names></name><xref ref-type="aff" rid="af2">2</xref></contrib><contrib contrib-type="author"><name><surname>Lambers</surname><given-names>Hans</given-names></name><xref ref-type="aff" rid="af3">3</xref></contrib><contrib contrib-type="author"><name><surname>Chiba</surname><given-names>Kyozo</given-names></name><xref ref-type="aff" rid="af2">2</xref></contrib></contrib-group><aff id="af1"><label>1</label><addr-line>Gorgan University of Agricultural Sciences and Natural Resources, POB 49175-386, Gorgan</addr-line>,<country>Iran</country></aff><aff id="af2"><label>2</label><addr-line>Laboratory of Applied Plant Ecology, Graduate School of Natural Sciences and Technology</addr-line>,<institution>Okayama University</institution>,<addr-line>Tsushima-naka, Okayama 700</addr-line>,<country>Japan</country></aff><aff id="af3"><label>3</label><addr-line>School of Plant Biology</addr-line>,<institution>The University of Western Australia</institution>,<addr-line>35 Stirling Highway, Crawley WA 6009</addr-line>,<country>Australia</country></aff><author-notes><corresp id="cor1"><label>*</label>For correspondence E-mail <email>abdolzadeh@gau.ac.ir</email> or <email>ah_ab99@yahoo.com</email></corresp></author-notes><pub-date pub-type="ppub"><month>11</month><year>2008</year></pub-date><pub-date pub-type="epub"><day>4</day><month>9</month><year>2008</year></pub-date><volume>102</volume><issue>5</issue><fpage>735</fpage><lpage>746</lpage><history><date date-type="received"><day>17</day><month>5</month><year>2008</year></date><date date-type="rev-recd"><day>23</day><month>6</month><year>2008</year></date><date date-type="accepted"><day>22</day><month>7</month><year>2008</year></date></history><permissions><copyright-statement>© The Author 2008. Published by Oxford University Press on behalf of the Annals of Botany Company. All rights reserved. For Permissions, please email: journals.permissions@oxfordjournals.org</copyright-statement></permissions><abstract><sec><title>Background and Aims</title><p>The source of nitrogen plays an important role in salt tolerance of plants. In this study, the effects of NaCl on net uptake, accumulation and transport of ions were investigated in <italic>Nerium oleander</italic> with ammonium or nitrate as the nitrogen source in order to analyse differences in uptake and cycling of ions within plants.</p></sec><sec><title>Methods</title><p>Plants were grown in a greenhouse in hydroponics under different salt treatments (control vs. 100 m<sc>m</sc> NaCl) with ammonium or nitrate as the nitrogen source, and changes in ion concentration in plants, xylem sap exuded from roots and stems, and phloem sap were determined.</p></sec><sec><title>Key Results</title><p>Plant weight, leaf area and photosynthetic rate showed a higher salt tolerance of nitrate-fed plants compared with that of ammonium-fed plants. The total amount of Na<sup>+</sup> transported in the xylem in roots, accumulated in the shoot and retranslocated in the phloem of ammonium-fed plants under salt treatment was 1·8, 1·9 and 2·7 times more, respectively, than that of nitrate-treated plants. However, the amount of Na<sup>+</sup> accumulated in roots in nitrate-fed plants was about 1·5 times higher than that in ammonium-fed plants. Similarly, Cl<sup>−</sup> transport via the xylem to the shoot and its retranslocation via the phloem (Cl<sup>−</sup> cycling) were far greater with ammonium treatment than with nitrate treatment under conditions of salinity. The uptake and accumulation of K<sup>+</sup> in shoots decreased more due to salinity in ammonium-fed plants compared with nitrate-fed plants. In contrast, K<sup>+</sup> cycling in shoots increased due to salinity, with higher rates in the ammonium-treated plants.</p></sec><sec><title>Conclusions</title><p>The faster growth of nitrate-fed plants under conditions of salinity was associated with a lower transport and accumulation of Na<sup>+</sup> and Cl<sup>−</sup> in the shoot, whereas in ammonium-fed plants accumulation and cycling of Na<sup>+</sup> and Cl<sup>−</sup> in shoots probably caused harmful effects and reduced growth of plants.</p></sec></abstract><kwd-group><title>Key words</title><kwd>Mineral cycling</kwd><kwd><italic>Nerium oleander</italic></kwd><kwd>nitrogen source</kwd><kwd>salinity</kwd><kwd>xylem and phloem transport</kwd></kwd-group></article-meta></front></pmc></record>Pour manipuler ce document sous Unix (Dilib)
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